Astronomy Problems: Please Look/help

[astronomystudent]

I am going to go with rock. Thank you very much for all of ya'lls help. It is greatly appreciated.

 

[tony873004]

You're right. I squared instead of cubed a
the mass = 2.95x10^24 kg
and the density = 59032871.67 kg/m^3
how can i rewrite the density, and how do i figure out what that is composed of?

You could express it in grams / cm^3. Just divide by 1000.

You got the right answers.

This is where your teacher is weird! This object is more than half as massive as Earth, while only ~1/30 Earth's diameter. That's why it is so dense. It is a hypothetical question, so anything's possible. I'd like to know what your teacher says is the correct answer for its composition.

You should try to do #4 now, even though you don't need it. You almost had it and that's a good problem to understand.

 

[astronomystudent]

Yeah, I went to class, and he told us the answer was METAL. And I asked why it was metal and he said it was much too dense to be rock or ice. Is taht true?

 

[tony873004]

Yeah, I went to class, and he told us the answer was METAL. And I asked why it was metal and he said it was much too dense to be rock or ice. Is taht true?

Yes, but it's also too dense to be metal. Ask him what kind of metal.